Six Mile Island State Nature Preserve was created on 1979-06-24.
Brigadoon State Nature Preserve was created in 1985.
The area of Six Mile Island State Nature Preserve is 327,795.3702144 square meters.
Beargrass Creek State Nature Preserve was created in 1982.
Blackhand Gorge State Nature Preserve was created in 1975.
Lake Katharine State Nature Preserve was created in 1975.
Conkle's Hollow State Nature Preserve was created in 1925.
Acadia Cliffs State Nature Preserve was created in 1994.
Hoosier Prairie State Nature Preserve was created in 1976.
Axe Lake Swamp State Nature Preserve was created in 1991.
Bad Branch Falls State Nature Preserve was created in 1985.
The area of Blackhand Gorge State Nature Preserve is 3,872,841.5962368003 square meters.
The area of Lake Katharine State Nature Preserve is 8,170,603.1168256 square meters.